The Mosky Cosmic Blue is a hand-built effect pedal that combines a digital reverb with a bufferbooster, so it adds space to your signal while also offering a buffer and boost stage in the same box1. It sits in Mosky's M-Series range, alongside pedals like the MOSKY Spring Reverb Mini and the Mosky Multi Spring Reverb1.
Controls
The Cosmic Blue carries four knobs, which cover the usual reverb questions of how much effect you hear, how long it lasts, and when it starts1.
| Control | What it does |
|---|---|
| BLEND | Mixes the reverb with your dry signal |
| DECAY | Sets the length of the reverb tail |
| MORPH | Shapes the reverb character |
| PREDELAY | Sets the time before the reverb begins |
Mosky's product page lists the controls as BLEND, DECAY, MORPH and PREDELAY, without published detail on the exact ranges each knob covers1.
Power and practicalities
The pedal runs on a DC9V supply with the center negative, and Mosky specifies a current draw of 300mA1. That is a heavier draw than many compact reverb pedals, so it is worth checking what your power supply can deliver before adding it to a daisy chain. Physically it measures 12 x 9.5 x 6 cm and weighs 350g1.
Mosky specifies 300mA at 9V for the Cosmic Blue1. A supply output rated well below that may not run the pedal reliably.
Where it sits in Mosky's range
Mosky builds the Cosmic Blue as part of its M-Series of hand-built pedals1. Players looking at Mosky's reverb options can compare it with the MOSKY Spring Reverb Mini and the Mosky Multi Spring Reverb, and the maker's broader lineup includes multi-effects units such as the Mosky RD5 Multi-Effects Pedal1. For more on the effect type, see the site's page on Reverb Pedals.
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Questions
What kind of reverb is the Mosky Cosmic Blue?
Mosky lists it as a digital reverb with a bufferbooster, meaning the pedal combines a reverb effect with a buffer and boost stage in one box. The character of the reverb is shaped with four knobs: Blend, Decay, Morph and Predelay. It is a hand-built pedal in Mosky's M-Series range.
How is the Mosky Cosmic Blue powered?
Mosky specifies a DC9V power supply with center-negative polarity, drawing 300mA. Because of that current draw, a standard low-current daisy-chain output may not be enough on its own, so a supply that can deliver 300mA at 9V is the safe choice.
Sources (1)
- COSMIC BLUE_M-SERIES_Products_mosky pedal, moskyaudio.com









